Journals / Mikrobiyoloji Bülteni / 2010 / Cilt: 44 - Sayı: 1

Phospholipase, proteinase and hemolytic activities of Candida albicans isolates obtained from clinical specimens

Klinik örneklerden izole edilen Candida albicans suşlarının fosfolipaz, proteinaz ve hemolitik aktiviteleri

Pages
71–77
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, besides proteinase and phospholipase enzyme activities, hemoly-tic activity may play an important role for the Calbicans infections.

📌 3 Key Takeaways

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Objective & Hypothesis:This study was aimed to determine the phospholipase, proteinase and hemolytic activities of Candida albicans strains isolated from clinical specimens.
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Key Findings & Data:A total of 147 C.albicans strains isolated from blood (n= 29), respiratory specimens (n= 44), urine (n= 52), pus (n= 1 7) and stool (n= 5) were included in the study.
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Conclusion & Impact:In conclusion, besides proteinase and phospholipase enzyme activities, hemoly-tic activity may play an important role for the Calbicans infections.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

This study was aimed to determine the phospholipase, proteinase and hemolytic activities of Candida albicans strains isolated from clinical specimens. A total of 147 C.albicans strains isolated from blood (n= 29), respiratory specimens (n= 44), urine (n= 52), pus (n= 1 7) and stool (n= 5) were included in the study. Proteinase and phospholipase activities were determined in 81% and 76% of C.albicans isolates, respectively. All Calbicans isolates revealed beta-hemolytic activity on Sabouraud dextrose agar supplemented with 7% fresh sheep blood and 3% glucose. Phospholipase and proteinase positivity were highest among the respiratory isolates. Proteinase activity of respiratory (93%) and blood (83%) isolates were statistically significantly higher than that of urine (77%; p= 0.032), pus (65%; p- 0.007) and stool isolates (60%; p- 0.026). While phospholipase activity showed statistically significant difference between respiratory (84%) and pus (53%) isolates (p= 0.014), no statistically significant difference was determined for blood (79%), urine (75%) and stool (80%) isolates (p> 0.05). Two blood isolates with 4+ proteinase activity and 3 urine isolates with 3+ proteinase activity were phospholipase negative. One urine isolate with 4+ phospholipase activity and 4 with 3+ phospholipase activity were proteinase negative. Phospholipase and proteinase negative 1 isolate from stool and 1 isolate from pus were found to have 4+ hemolytic activity. In conclusion, besides proteinase and phospholipase enzyme activities, hemoly-tic activity may play an important role for the Calbicans infections. The pathogenetic role of these virulence factors should be evaluated by further clinical studies.

Özet

Bu çalışmada, klinik örneklerden izole edilen Candida albicans suşlarının, fosfolipaz ve proteinaz enzim aktiviteleri ile hemolitik özelliklerinin araştırılması amaçlanmıştır. Çalışmaya, kan (n= 29), solunum yolu (n= 44), idrar (n= 52), yara yeri (n= 17) ve gaita (n= 5) örneklerinden izole edilen ve C.albicans olarak tanımlanan 147 suş dahil edilmiştir, izolatların %81'inde proteinaz, %76'sında fosfolipaz ve tümünde (%100) beta-hemolitik aktivite belirlenmiştir. Proteinaz ve fosfolipaz pozitifliği en fazla solunum yolundan izole edilen suşlarda gözlenmiştir. Solunum yolu (%93) ve kan (%83) izolatlarının proteinaz aktivitesi; idrar (%77; p= 0.032), yara yeri (%65; p= 0.007) ve gaita (%60; p= 0.026) izolatlarının proteinaz aktivitesi ile karşılaştırıldığında istatistiksel olarak anlamlı bir fark göstermiştir. Fosfolipaz enzim aktivitesi dikkate alındığında, solunum yolu izolatları (%84) ile yara yeri izolatları (%53) arasında istatistiksel olarak anlamlı fark bulunmuş (p= 0.014), diğer bölgelerden izole edilen suşlar arasında (kan: %79, idrar: %75, gaita: %80) istatistiksel olarak anlamlı fark gözlenmemiştir (p> 0.05). Kandan izole edilen 4+ proteinaz aktivitesine sahip 2 izolat ve idrardan izole edilen 3+ proteinaz aktivitesi gösteren 3 izolat, fosfolipaz aktivitesi bakımından negatif bulunmuştur. Buna karşın, idrardan izole edilen 4+ fosfolipaz aktivitesi gösteren 1 izolatın ve 3+ fosfolipaz aktivitesi gösteren 4 izolatın, proteinaz aktivitesi bakımından negatif olduğu belirlenmiştir. Fosfolipaz ve proteinaz aktivitesi negatif olan gaitadan izole edilen bir suş ile yara yerinden izole edilen bir suş ise 4+ hemolitik aktivite göstermiştir. Sonuç olarak, C.albicans'\n virülans faktörleri olarak kabul edilen fosfolipaz ve proteinaz aktivitelerinin yanı sıra, hemolitik özelliklerinin de önem taşıdığı ve bu faktörlerin enfeksiyon oluşumundaki rollerinin belirlenmesi için daha ileri klinik çalışmalara gereksinim olduğu düşünülmüştür.

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Cite This Article

YENİŞEHİRLİ, G., BULUT, Y., TUNÇOĞLU, E. (2010). Phospholipase, proteinase and hemolytic activities of Candida albicans isolates obtained from clinical specimens. Mikrobiyoloji Bülteni, Cilt: 44 - Sayı: 1, 71–77. https://ajindex.com/articles/299598

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